Myocarditis and pericarditis after COVID-19 vaccination is rare across demographic groups and most likely to occur in teen boys in the week after their second shot of a two-dose vaccine, according to a study.
It was also more likely to occur after a booster shot compared with a first dose of vaccine, the study showed.
When it does occur, researchers found the side effect nearly always fades within a week or so, with no further health events noted.
“Overall risk in the general population remains low,” Kristin Goddard, MPH, a research practice specialist at the Kaiser Permanente